Side frame for car trucks



July 6, 1926. 1,591,096

L. G- MILLER SIDE' FRAME FOR CAR TRUCKS Filed August 27, 1924 'llh I INVENTOR Louis- @Mz'llen' ATTORNEYS 1 P atentedhJuly 6, 119 26 UN EIDf LOUIS e; MILLnn,'-.onroUNT'AIN-flHint; BoRouGH, rnnnsxnvAni gnssienon :ro I 1 j FBETI-ILEHEMSTEEL:COMPANY. Y I

SIDE FRAME Foams 'rnuoksli Application filed August 27, v1924. Serial 11o. 734,393.

My inventionrelates to side frames for car trucks, and has for an object the provision of adequatebearing surfaces between the bolster guide casting and; the compression and tension components ofthe frame, irrespective of variations in said casting.

In the drawing I showin Fig. 1 a side elevation in part section of the side frame; in Fig. 2 an endelevation of same; audio 10 Fig; 8 a section'across the line IIIIII in Fig. 1.

In Figs. 1,2 and 3, I show a casting 11 of inverted yoke construction, forming a pair oftruck columns 12 joined at'th'eir lower ends by a longitudinal portion 13, the latter providing a spring seat. The upper ends of the columns 12arecored out to provide sockets 14, the lower internal faces of said sockets being inclined or tapered.

A similar socket 15 is provided atthe center of the longitudinal portion 13, having like- 7 wise a lower internalface inclined or tapered. I also show an upper arch bar, or compression member 16 of flat plate construction passing through the sockets 14 and extending forwardly and rearwardly there from. These extended portions of the arch.

bar are? deflected slightlydownwards. and terminate in horizontal bearing plates 18 in 3 tie bar 20 pass through the lower socket 115. The truss bar 19 extends upwards-from the lower socket and is secured by rivets 3-5 to the bearingfplates 18 .of the arch bar.- the truss bar for therivet head, I'make the bearing plates 18 and the ends of the truss,

bar of concavo-convex construction therebv providing clearances for the rivet heads above thejournal boxes. The tiebar-20 is also extended forwardly and rearwardly to the lower portion of the journal boxes. Bolts 21 serve to secure the archibar, the

bers, and to compensate for variations in c the cored dimensions of the sockets, Itinsert wedges '22 between the faces of the arch I I bar 16 and the sockets 14. These wedges have I a taper correspondingto'the tapered wall" of the sockets 14. In the same way a wedge 23 is inserted between the tie bar and the usual manner. 1 A'truss bar 19 and a To avoid the necessity of counter sinking. V I

'compresslonand tension members secured to truss bar and the tie .rod to the journal the s ocket15. Thesewedges insure adequate bearlng surfaces regardless of any varia tlons 1n the dimensions of the cored sockets.

When' the wedges have been driven home,

they are held in their respective positions by suitable rivets, said rivets also passing through the corresponding members and sockets.

Having thus described my invention,

for a car truck'c'onpression member and tension, members, the

combination of sockets in the upper portion of the bolster guide casting for the compression member, a socket in the lower poi tion of the casting "for thetension members, said sockets having their lowerinternal faces tapered, wedges inserted betweenflie tapered faces of they sockets and the members to substantially support said members, a

and means securingthe wedges when so inserted. r v j 2. In a side frame fora car truck, the comblnatlon of two truck columns, a spring seat joining said columns at their lower 7,

ends and integral therewith, a compression 1 member passing through saidcolumns, tension memberspassing through thespring;

seat, and wedges inserted at the intersectionof the compression member with the columns, and at the intersection of the tension 7 members with the spring seat-j journal boxes, the combination of anin- 3. In a side frame for a car truck,;having" .1

verted yoke,'said yoke providing a spring seat, a bolster guide and sockets for the com pression and the tension members, .and

wed'ging means for efiectively clamping said members to the yoke.

two tension members, said members extending to'journal boxes and having straight endportions adaptedto be secured thereto,

the end portions of the compression member 4. In a side frame for a car truck having ournal boxes, thecombmatmn o-fa bolster gu1de casting, a compress on member and ion and of the-first tension memberhavin'gcor-l responding concave-convex portions shouldering oneach'other, rlvets securing these members .to each other at their concaVoconvex portions, the heads of said rivets V thereby clearing the upper surface of the member to the upper sockets, and the tension o journal boxes, the end'portions of the sec members to the lower socket, andrivets to 10 p 0nd tension member extending to the base I secure said adjusting means in their clampof the journal boxes, bolts securing all the 'ing position.

members to the journal boxes, two upper i In testimony whereof I hereuntoefiix my 7 sockets, a lower socket, said sockets disposed signature this 25th day of August,.1924.l

in the bolster guide casting,vadjusting means in said sockets to clamp the compression 7 V 7 LOU IS G. 

